/*
 * Copyright 2021-2022 by Nedim Sabic Sabic
 * https://www.fibratus.io
 * All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package signals

import (
	log "github.com/sirupsen/logrus"
	"golang.org/x/sys/windows"
	"os"
	"os/signal"
)

// Install setups the signal handler. Returns a blocking
// channel which receives an input after Interrupt or Term
// signals are triggered.
func Install() chan struct{} {
	sigCh := make(chan os.Signal, 1)
	signal.Notify(sigCh, os.Interrupt, windows.SIGTERM)

	stopCh := make(chan struct{})

	go func() {
		sig := <-sigCh
		log.Infof("got signal %q, shutting down...", sig)
		stopCh <- struct{}{}
	}()

	return stopCh
}
